Warm Up Use the figure below to answer each question

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Presentation transcript:

Warm Up Use the figure below to answer each question. 1 2 3 4 5 6 7 8 < 3 and < 6 are ____________________ angles. < 1 and < 8 are ____________________ angles. < 2 and < 6 are ____________________ angles. < 3 and < 5 are ____________________ angles. < 4 and < 8 are ____________________ angles.

Section 3.4 Find and Use Slopes of Lines Objective: SWBAT find and compare slopes of lines.

Slope of a line Negative slope: Line falls left to right Positive slope: Line rises left to right Zero slope: Horizontal Line Undefined slope: Vertical Lines

Slopes of Parallel Lines Parallel lines have same slope

Slopes of Perpendicular Lines Perpendicular lines have slopes that are negative reciprocals of each other. The product of their slopes is -1.

Graph the lines and tell whether the lines are parallel, perpendicular, or neither. Line 1: (-9, 3), (-7, 7), Line 2: (-10, 6), (-6, 4) Step 1: Find the slope of each line Step 2: Determine if the lines are parallel, perpendicular, or neither. Step 3: Graph the lines.

Graph

Graph the lines and tell whether the lines are parallel, perpendicular, or neither. Line 1: (0, 2), (6, 5), Line 2: (2, 4), (4, 0)

Graph the line through the given point with the given slope.

Graph the line through the given point with the given slope.

Graph the line through the given point with the given slope.

Study Guide Worksheet Exercises 1-5 Homework Study Guide Worksheet Exercises 1-5